<template>
  <el-upload
    class="avatar-uploader"
    action="#"
    :show-file-list="false"
    :http-request="httpRequest"
  >
    <img v-if="imageUrl" :src="imageUrl" class="avatar">
    <i v-else class="el-icon-plus avatar-uploader-icon" />
  </el-upload>
</template>

<script>
export default {
  data() {
    return {
      imageUrl: ''
    }
  },
  methods: {
    httpRequest(val) {
      console.log(val)
      // 本地预览，还没有上传   通过createObjectURL生成一个本地地址，在内层里面
      this.imageUrl = URL.createObjectURL(val.file)
    }
  }
}
</script>

<style>
  .avatar-uploader .el-upload {
    border: 1px dashed #d9d9d9;
    border-radius: 6px;
    cursor: pointer;
    position: relative;
    overflow: hidden;
  }
  .avatar-uploader .el-upload:hover {
    border-color: #409EFF;
  }
  .avatar-uploader-icon {
    font-size: 28px;
    color: #8c939d;
    width: 178px;
    height: 178px;
    line-height: 178px;
    text-align: center;
  }
  .avatar {
    width: 178px;
    height: 178px;
    display: block;
  }
</style>
